Improved metaii-roof protector



roofs are very Superior, owing to their great niird gieten- @stamattina GEORGE n; voLKMAR., or RAL'TiMoRa' MARYLAND Letters Patent N o. 102,451, dated April V26, 1870; antedatecl April l5, 1870.

The Schedule referred to' in these Letters Patent and making part of the sau-.ueA

I, GEORGE D.VonKMAR, of Baltimore, in the State of Maryland, have invented a new. and useful Metal- Roof Protector.

Natureuntl Object of the Intention.

.It has long been conceded that for railroad buildings and large sheds of other descriptions, sheet-iron economy, safety, and strength.

Certain serious defects, however, have hitherto existed in roofs of this character, forming serious drawbacks to their use.

-To obviate these by a simple and permanent remedy is the object of this invention.

All metal roofs, unless protected by a sheathing of wood, will sweat or gather moisture by condensation on their inner surface, more or less, all the year round, especially when the tei'nperature without is lower than that in the building.

This moisture, collecting at prominent points of the surface, drops iu considerable quantities, causing annoyance, and, at times, considerable damage torgoods l stored in the building, and, in passenger-depots, 85e., to' the clothes of passengers and othersvrwalking be- Y neat-h. It further penetrates the grooves and seams between the plates composing the roof, some essential to its support, causing rust and ultimately premature decay.

I render this moisture harmless to the roof, preventing its dropping on the inside and collecting in and rusting the seams, by providing means forcon-- veying it to the outer surface, consisting of suitable funnels or conductors applied at the transverse seams or joints, which conductors, including their application to the roof, constitute the subject of my invention. v

Description of Drawings.

1n the accompanying drawingsi 4 Figure l represents a longitudinal section, aud

Figure 2 a sectional perspective view of a portion ot a seamed roof, provided with my protector in the form adapted therefor; and

Figures 3 and 4, similar views ot' a roof, the plates of which simply overlap, having my protector, adapted for that form, applied.

l General Description.

In the drawingsa o represent the plates composing the roof l), the longitudinal joints of the same; and

c, their transverse joints. The latter form the projections at which the moistl ure collects and drops from, in roofs unprovided with my protector, and, therefore, form the most eli'ective places for its application, beside the facility afforded by the seams or joints for its introduction. l

' d e represent the conductor.

f, figs. .1 and 2, an additional part orsocket, for the securement of the conductor d.

- The conductors d e are of daring form, presenting suicient opening at the outer end for the discharge of thc water, and sufficiently larger at the inner to readily receive it, and are preferably of nearly the width of the plates composing the roof, curved, to correspond therewith, aud of about the proportions shown, aud may be made of sheet-iron or other suita ble material.

They are applied at the end of each plate, or at suitable intervals in the length or depth of the root', and transversely in leach of the gutters or concavities ofthe same. Y

The form (l for seamed roofs is provided, iu addition to the general construction named, with a tubular extension, d', and with end flanges, for conducting the water thereto, in order to` restrict the-water to the opening 'through the roof, which, in that class oiroofs, has to he made' for it.

Thesev provisions render it so thick as to prevent its ready insertion in the open edge of the seam, which is provided for it in the socket f, into the seam, receives and holds it. i

v T he opening for the tubular extension d" may be made with a chisel or other suitable instrument, being made at the center or lowest part of the seam, as shown. l Y

The form e for lap-joint roofs may be of the general description before given, as represented; the opeu form of said joints rendering unnecessary the special provision (made in d) for conducting the Water therethrough.

The socket f of the form (Z may be of substantially the shape of form c, as shown, having, iu ad' dition, a depression to accommodate its tube d', and may be either separate therefrom or suitably attached thereto.

It is obvious that precise form and proportions may be varied, without essentially changing the operation of the device.

Being applied as shown, the conductors operate by receiving in their flaring mouths any water which may collect and run down on the ,under side of the roof, conducting it through to the outside, where it y may, without objection, run oi.

The advantages of the invention are obvious. Besides eiectually and y 'permanently removing the nuisance of the drip from the roof, it, at a triiiing cost, preserves the roof from the deleterious rust occasioned by such water, when not so disposed of,

and thus improves the wear of the roof, and, couwhich, being introduced sequently; e'ects a. great saving in'expenditures for of a metal roof, of conductors al d e, adapted to carry renewal and repair. Y o' the waterresulting from moisture or sweat from its inner to its outer surface, substantiallyy as set A t Clwmns. forth I claimas my `inventon GEO. D. VOLKMAR.

1. The conductors d d' e, constructed substantial- 1y asdescrbed, to operate as and for the purpose Witnesses: set forth. Y OCTAVIUS KNIGHT,

2. The provision, in the transverse seams or joints W. B. DEMING. 1 

